self-locking key

Abstract

This invention proposes a self-locking key for a rotating shaft, comprising a first component, a second component, a locking element, and a first elastic element. The first component has a mounting groove, within which a first protrusion extending away from the depth direction is provided. The second component has a first positioning hole and is rotatably connected to the first component. The locking element includes a mounting portion and a locking portion. The mounting portion is movably mounted on the first protrusion, and the locking portion is fixedly connected to the mounting portion. The locking portion has an unlocked state where it moves along the depth direction of the mounting groove to disengage from the first positioning hole, and a locked state where it moves away from the depth direction of the mounting groove to insert into the first positioning hole. Along the elastic force direction of the first elastic element, the first elastic element connects the locking element and the first component. In the unlocked state, the first elastic element provides an elastic force to the locking element away from the first component, thereby locking the locking element. The self-locking key of this invention can actively switch from an unlocked state to a locked state, possessing self-locking capability.

Description

Technical Field

[0001] This invention relates to the field of on-camera flash technology, and in particular to a self-locking key for a rotating shaft. Background Technology

[0002] With cameras becoming increasingly common in people's lives, flash units have become an indispensable accessory for shooting in low-light environments in order to improve the quality of photos and videos taken in such conditions. To achieve the best shooting results, the angle of the flash unit needs to be adjusted.

[0003] In the existing technology, most flash units are inconvenient due to the lack of a self-locking function, resulting in poor shooting effects for cameras. A few flash units have a self-locking function, but their self-locking structure design is complex, difficult to manufacture, and costly. Summary of the Invention

[0004] The main objective of this invention is to propose a self-locking key for a rotating shaft, which is easy to install and saves costs.

[0005] To achieve the above objectives, the present invention proposes a self-locking key for a rotating shaft, comprising a first component, a second component, a locking member, and a first elastic member. The first component has a mounting groove, within which a first protrusion extending away from the depth direction is provided. The second component has a first positioning hole and is rotatably connected to the first component. The locking member includes a mounting portion and a locking portion. The mounting portion is movably mounted on the first protrusion, and the locking portion is fixedly connected to the mounting portion. The locking portion has an unlocked state where it moves along the depth direction of the mounting groove to disengage from the first positioning hole, and a locked state where it moves away from the depth direction of the mounting groove to insert into the first positioning hole. Along the elastic force direction of the first elastic member, the first elastic member connects the locking member and the first component. In the unlocked state, the first elastic member provides an elastic force to the locking member away from the first component, thereby locking the locking member. In the unlocked state, the second component is rotatable relative to the first component; in the locked state, the position of the second component relative to the first component is fixed.

[0006] In some embodiments, the first component further has a clearance groove, in which the locking portion is engaged in the clearance groove in the unlocked state.

[0007] In some embodiments, the second component further has a second positioning hole, wherein in the locked state, the locking part is inserted into the first positioning hole or the locking part is inserted into the second positioning hole, and in the unlocked state, the locking part is disengaged from the first positioning hole and the second positioning hole.

[0008] In some embodiments, the first positioning hole and the second positioning hole are connected.

[0009] In some embodiments, the self-locking key of the pivot further includes a second elastic member, a portion of which is disposed on the inner wall surface of the mounting groove, and another portion of which abuts against the mounting portion. The second elastic member provides elastic force to slow down the speed at which the lock transitions from an unlocked state to a locked state.

[0010] In some embodiments, the peripheral wall of the mounting groove tapers along the groove depth direction.

[0011] In some embodiments, the self-locking key of the rotating shaft further includes a limiting member connected to the first protrusion. The limiting member has a boss protruding from the first protrusion, and the mounting portion has a second protrusion. In the locked state, the boss abuts against the wall of the mounting groove opposite to the wall of the mounting groove.

[0012] In some embodiments, along the elastic force direction of the first elastic member, the first elastic member is respectively connected to the second protrusion and the first component.

[0013] In some embodiments, the first elastic element is a spring.

[0014] In some embodiments, the second component further has a second positioning hole, and the self-locking key of the rotating shaft further includes a silicone cover, which covers the lock, the first positioning hole, and the second positioning hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The self-locking key of the present invention includes a first component, a second component, a locking member, and a first elastic member. The second component is rotatable relative to the first component. The second component has a first positioning hole. The locking member is inserted into the first positioning hole to restrict the rotation of the second component relative to the first component. The locking member disengages from the first positioning hole to release the rotation of the second component relative to the first component. The first component has a mounting groove and a first protrusion. The first protrusion extends in a direction away from the depth of the mounting groove. The first protrusion passes through the locking member. The locking member switches between a locked state and an unlocked state under the guidance of the first protrusion.

[0017] The lock is connected to the first elastic element. When the lock is pressed down, the locking part of the lock disengages from the first positioning hole, putting the lock in the unlocked state. At this time, the first elastic element is compressed. When the second component is rotated, the wall of the second component facing the first component presses against the lock, preventing the lock from returning to the position inserted into the first positioning hole. When the other positioning holes of the second component are rotated to be directly above the lock, the lock, under the elastic force of the first elastic element, returns to the position previously inserted into the first positioning hole. At this time, the lock is inserted into the other positioning holes, and the second component is at another angle relative to the first component.

[0018] The first elastic element enables the self-locking key of the rotating shaft of the present invention to have a self-locking function. Specifically, when other positioning holes are located at the first positioning hole, the first elastic element will spring up the locking element to restrict the continued rotation of the first component and the second component. Furthermore, the present invention adopts a modular design, allowing the locking element, the first component, the second component, and the first elastic element to be processed separately, improving production efficiency, reducing assembly difficulty, and lowering manufacturing costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the flash lamp structure of the present invention;

[0021] Figure 2 This is a schematic cross-sectional view of a flash lamp according to an embodiment of the present invention;

[0022] Figure 3 for Figure 2 Enlarged view of point A;

[0023] Figure 4 This is a schematic diagram of the flash unit of the present invention after the silicone cover has been removed;

[0024] Figure 5 For this Figure 4 Enlarged view of point B;

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of a flash lamp according to another embodiment of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view at point C;

[0027] Figure 8 This is a schematic diagram of the structure of the second component;

[0028] Figure 9 This is a schematic diagram of the structure of the first component;

[0029] Figure 10 A schematic diagram of the structure of the first component as viewed from another direction;

[0030] Figure 11 This is a structural diagram of the lock component;

[0031] Figure 12A schematic diagram of the lock mechanism as viewed from another direction;

[0032] Figure 13 This is a schematic diagram of the silicone cap.

[0033] Explanation of icon numbers:

[0034] First component 100; mounting groove 110; clearance groove 120; first protrusion 130;

[0035] Second component 200; First positioning hole 210; Second positioning hole 220;

[0036] Locking component 300; mounting part 310; locking part 320;

[0037] First elastic element 400;

[0038] Second elastic element 500;

[0039] Limiting component 600; Boss 610;

[0040] Silicone cap 700.

[0041] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0044] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0045] In the existing technology, most flash units are inconvenient due to the lack of a self-locking function, resulting in poor shooting effects for cameras. A few flash units have a self-locking function, but their self-locking structure design is complex, difficult to manufacture, and costly.

[0046] In view of this, see Figures 1 to 13 In one embodiment of the present invention, a self-locking key for a rotating shaft is provided for use in a built-in flash. The self-locking key includes a first component 100, a second component 200, a locking member 300, and a first elastic member 400. The second component 200 is rotatable relative to the first component 100. The locking member 300 has an unlocked state and a locked state. In the unlocked state, the locking member 300 releases the restriction on the rotational relationship between the first component 100 and the second component 200, allowing them to rotate. In the locked state, the locking member 300 restricts the connection between the first component 100 and the second component 200, preventing them from rotating. The first elastic member 400 provides elasticity to actively switch the locking member 300 from the unlocked state to the locked state.

[0047] Specifically, refer to Figure 3 , Figure 7 , Figure 9 and Figure 10 The first component 100 is provided with a mounting groove 110, which is recessed towards the side of the first component 100 opposite to the second component 200, and the depth direction of the mounting groove 110 is the direction of its recess. A first protrusion 130 extending away from its depth direction is provided within the mounting groove 110. The first protrusion 130 is columnar and passes through the locking member 300, allowing the locking member 300 to move along the straight line of the extending direction of the first protrusion 130. The first protrusion 130 is provided to guide the movement of the locking member 300.

[0048] Reference Figure 5 and Figure 8 The second component 200 has a first positioning hole 210, and the locking member 300 connects the first component 100 and the second component 200. Relative to the first component 100, the locking member 300 moves only along the straight line extending from the first protrusion 130, and does not rotate relative to the first component 100. When the locking member 300 moves along the extending direction of the first protrusion 130 to be inserted into the first positioning hole 210 of the second component 200, the second component 200 cannot rotate with the locking member 300. Since the locking member 300 cannot rotate with the first component 100, it restricts the position of the second component 200, preventing rotation between the second component 200 and the first component 100. At this time, the locking member 300 is in a locked state.

[0049] The locking component 300 also has an unlocked state. Specifically, the locking component 300 can be pressed down to disengage from the first positioning hole 210 of the second component 200. At this time, the second component 200 can rotate relative to the first component 100.

[0050] Reference Figures 3 to 7 as well as Figure 11 and Figure 12 The lock 300 has a mounting portion 310 and a locking portion 320. Specifically, the mounting portion 310 of the lock 300 is tubular, and the first protrusion 130 of the first component 100 passes through the mounting portion 310 of the lock 300 so that the lock 300 can move along the extension direction of the first protrusion 130 and guide the movement of the lock 300. Specifically, the locking member 300 moves in a direction away from the first component 100 under the guidance of the first protrusion 130. When the locking part 320 of the locking member 300 moves to the first positioning hole 210 of the second component 200, the second component 200 is restricted by the locking member 300 and cannot rotate relative to the first component 100. At this time, the locking member 300 is in a locked state. When the locking part 320 of the locking member 300 moves to disengage from the first positioning hole 210 of the second component 200, the locking member 300 releases the restriction on the second component 200, allowing the second component 200 to rotate relative to the first component 100. At this time, the locking member 300 is in an unlocked state.

[0051] It is understood that in some embodiments, one side of the mounting portion 310 of the lock 300 is used to connect to the first component 100, and the other side of the mounting portion 310 of the lock 300 is used to connect to the second component 200. The side of the mounting portion 310 of the lock 300 that connects to the first component 100 is located in the mounting groove 110. Specifically, the opening of the mounting groove 110 is square, and the portion of the lock 300 that connects to the mounting groove 110 is square, so that the lock 300 cannot rotate relative to the mounting groove 110. The portion of the mounting portion 310 of the lock 300 that connects to the second component 200 is cylindrical, and the second component 200 can rotate about the mounting portion 310 of the lock 300 as a pivot, achieving the purpose of the second component 200 being rotatably connected to the first component 100. Through the above settings, the effect of the lock 300 not rotating with the first component 100 and the lock 300 being rotatably connected to the second component 200 is ultimately achieved.

[0052] Reference Figures 1 to 6 Along the direction of the elastic force of the first elastic member 400, the first elastic member 400 connects the lock member 300 and the first component 100. The mounting portion 310 of the lock member 300 is pressed down to disengage the locking portion 320 of the lock member 300 from the first limiting hole, thereby placing the lock member 300 in the unlocked state. In the unlocked state, the locking portion 320 of the lock member 300 disengages from the first positioning hole 210 of the second component 200, and the first elastic member 400 is compressed. Due to the rotation of the second component 200 and the first component 100, the locking portion 320, disengaged from the first positioning hole 210, is pressed against by the second component 200, preventing the lock member 300 from returning to the locked state. When other positioning holes rotate to the first positioning hole 210, the disengaged first elastic member 400 provides an elastic force away from the first component 100 to the lock member 300, placing the lock member 300 in the locked state.

[0053] In the above embodiments, the first elastic element 400 enables the self-locking key of the rotating shaft of the present invention to have a self-locking function. Specifically, when other positioning holes are located at the first positioning hole 210, the first elastic element 400 will spring up the locking element 300 to restrict the continued rotation of the first component 100 and the second component 200. Furthermore, the present invention adopts a modular design, allowing the locking element 300, the first component 100, the second component 200, and the first elastic element 400 to be processed separately, improving production efficiency, reducing assembly difficulty, and lowering manufacturing costs.

[0054] In some embodiments, the first elastic member 400 may be a spring. Specifically, one end of the spring abuts against the bottom wall of the mounting groove 110, and the other end of the spring abuts against the mounting portion 310 of the lock member 300. The lock member 300 is pressed down until the locking portion 320 disengages from the first positioning hole 210 of the second component 200 and enters the unlocked state. At this time, the spring is pressed down, and the spring provides the mounting portion 310 of the lock member 300 with a spring force to return to the locked position. As the second component 200 rotates relative to the first component 100, the wall surface of the second component 200 facing the first component 100 blocks the locking part 320 of the lock 300 from returning to the locked position. When the second positioning hole 220 rotates to the position directly above the lock 300, since the second positioning hole 220 is a through hole like the first positioning hole 210, the locking part 320 of the lock 300 will actively insert into the second positioning hole 220 under the action of the spring, thereby restricting the relative rotation between the second component 200 and the first component 100. The lock 300 enters the locked state and realizes the self-locking function.

[0055] It is understood that in some other embodiments, the first elastic element 400 may also be a spring sheet or other elastic component, as long as it provides the elastic force to the locking element 300 to move toward the second component 200 so that the locking element 300 actively enters the locking state.

[0056] It is understood that in some embodiments, the second component 200 is rotatably connected to the first component 100. The second component 200 can be directly connected to the first component 100, or it can be indirectly rotatably connected to the first component 100 via the locking member 300. When the second component 200 is indirectly connected to the first component 100 via the locking member 300, the second component 200 rotates relative to the locking member 300, which serves as the pivot of the second component 200. At this time, the position where the locking member 300 connects to the second component 200 is cylindrical, so that the second component 200 can rotate around the locking member 300 as the pivot. The position where the locking member 300 connects to the first component 100 only needs to ensure that the locking member 300 and the first component 100 do not rotate.

[0057] In some embodiments, refer to Figure 3 , Figure 9 and Figure 10The first component 100 has a clearance groove 120 that connects to the mounting groove 110. The locking portion 320 of the locking member is fixedly connected to the mounting portion 310 and protrudes from the mounting portion 310. In the unlocked state, the locking member is fully recessed into the clearance groove 120. This arrangement prevents the locking portion 320 of the locking member 300 from failing to fully disengage from the first positioning hole 210 due to insufficient descent distance when the second component 200 and the first component 100 are close together, thus preventing relative rotation between the second component 200 and the first component 100. Therefore, this arrangement allows most of the second component 200 to be positioned close to the first component 100, saving space between the second component 200 and the first component 100 and making the structure of the self-locking key more compact.

[0058] When the second component 200 is arranged compactly with the first component 100 and facing the wall of the first component 100, the mounting portion 310 of the lock 300 can be entirely cylindrical to facilitate processing. In the locked state, the locking portion 320 of the lock 300 is partially located in the relief groove 120 and partially located in the first positioning hole 210. In the unlocked state, the locking portion 320 of the lock 300 is completely recessed into the relief groove 120.

[0059] Reference Figure 8 The second component 200 also has a second positioning hole 220. In the locked state, the locking part 320 is inserted into the first positioning hole 210 or the locking part 320 is inserted into the second positioning hole 220. In the unlocked state, the locking part 320 is disengaged from the first positioning hole 210 and the second positioning hole 220. The second positioning hole 220 allows the second component 200 to be positioned at multiple angles relative to the first component 100, providing the user with greater choice.

[0060] It is understandable that the second component 200 can also be provided with multiple positioning holes such as a third positioning hole and a fourth positioning hole, so that the second part of the self-locking key can form more angles with the first part, so that the self-locking key can be adapted to more application scenarios.

[0061] Reference Figure 8 In some embodiments, the first positioning hole 210 and the second positioning hole 220 are connected. Specifically, the position where the first positioning hole 210 and the second positioning hole 220 are connected covers the position where the mounting portion 310 of the lock 300 passes through the second component 200. Since the locking portion 320 of the lock 300 is fixedly connected to the mounting portion 310 of the lock 300, the locking portion 320 of the lock 300 needs to be inserted into the first positioning hole 210 or the second positioning hole 220 to restrict the relative rotation between the second component 200 and the first component 100. Therefore, the connection between the first positioning hole 210 and the second positioning hole 220 facilitates the setting of the locking portion 320 of the lock 300.

[0062] Considering that the exposed self-locking key of the shaft is prone to dust accumulation and thus component wear, a silicone cover 700 is provided to cover the positions of the locking component 300, the first positioning hole 210, and the second positioning hole 220. (Refer to...) Figure 1 , Figure 2 and Figure 13 Specifically, the center of the silicone cover 700 is located at the mounting portion 310 of the lock 300, and a mark is provided at the center of the silicone cover. During use, the user presses the center of the silicone cover 700 according to the mark, causing the mounting portion 310 of the lock 300 to be pressed down. The mounting portion 310 of the lock 300, along with the locking portion 320 of the lock 300, is pressed down, disengaging the locking portion 320 from the first positioning hole 210, thus allowing the lock 300 to enter the unlocked state from its locked state. Rotating the second component 200, causing the first positioning hole 210 to deviate from its original position, releases the pressure on the mounting portion 310 of the lock 300. At this point, the second component 200 springs up against the wall of the first component 100, resisting the locking portion 320. When the second positioning hole 220 of the second component 200 is located directly above the lock 300, since the second positioning hole 220 is a through hole like the first positioning hole 210, the locking part 320 of the lock 300 will be inserted into the second positioning hole 220, thereby restricting the relative rotation between the second component 200 and the first component 100. At this time, the lock 300 enters the locked position again.

[0063] In some embodiments, the silicone cap 700 is made of soft rubber with a wall thickness between 0.35mm and 0.55mm to ensure good elasticity and force when pressed.

[0064] Considering that initially pressing the silicone cover 700 requires simultaneous rotation of the second component 200 relative to the first component 100, this would cause wear on the silicone cover 700, reducing its lifespan. (Refer to...) Figure 7 A second elastic element 500 is provided to suppress the locking element 300 from returning to the locked state, thereby extending the rebound time of the locking element 300. This allows the user to press the silicone cover 700, release the silicone cover 700, and then rotate the second component 200, thereby reducing the wear of the silicone cover 700 and extending its service life.

[0065] Specifically, in some embodiments, the second elastic element 500 is a rubber ring, such as a rubber band. The second elastic element 500 is disposed around the inner wall of the mounting groove 110, and the side of the second elastic element 500 facing away from the inner wall of the mounting groove 110 contacts the mounting portion 310 of the lock 300. During the downward pressing of the mounting portion 310 of the lock 300, the second elastic element 500 twists and rolls downward under the action of friction with the mounting portion 310 of the lock 300, thereby blocking the movement of the mounting portion 310 of the lock 300. When the locking element 300 is pressed down to the unlocked state, the elastic force provided by the first elastic element 400 tends to push the locking element 300 back to the locked state. However, because the second elastic element 500 obstructs the movement of the locking element 300, after the pressure on the locking element 300 is removed, the elastic force of the first elastic element 400 on the locking element 300 must first overcome the obstruction effect of the second elastic element 500. Therefore, the initial rebound of the locking element 300 under the action of the first elastic element 400 is relatively slow. During this slower period, the user has sufficient time to turn the first elastic element 400. The second component 200 faces the wall of the first component 100 and abuts against the locking part 320 of the lock 300. Since the locking part 320 of the lock 300 has already rebounded a certain distance before being blocked by the second component 200, the blocking effect of the second elastic element 500 on the lock 300 is not significant at this time. When the second positioning hole 220 of the second component 200 rotates to directly above the lock 300, the lock 300 is still mainly subjected to the elastic force of the first elastic element 400 and quickly inserts into the second positioning hole 220, achieving self-locking. This design avoids the situation where the second component 200 rotates while the silicone cover 700 is being pressed, reducing the wear and tear on the silicone cover 700 and extending its lifespan.

[0066] It is understood that in some embodiments, the second elastic element 500 may also be a rubber ball disposed on the inner wall of the mounting groove 110. During the downward pressing of the locking member 300, the mounting portion 310 of the locking member 300 will squeeze the rubber ball, thereby generating friction between the rubber ball and the locking member 300. After releasing the locking member 300, due to the friction between the rubber ball and the locking member 300, the first elastic element 400 will not immediately spring up the locking member 300. It needs to overcome the friction between the rubber ball and the locking member 300 before it can spring up the locking member 300. During the time period when the first elastic element 400 overcomes the friction, the user has enough time to rotate the second component 200, so that the second component 200 blocks the locking portion 320 of the locking member 300, thereby avoiding the situation of pressing the silicone cover 700 and rotating the second component 200 at the same time, which helps to reduce the wear of the silicone cover 700 and extend the service life of the silicone cover 700.

[0067] Reference Figure 7In some embodiments, to increase the friction between the second elastic element 500 and the locking element 300, the peripheral wall of the mounting groove 110 contracts along the groove depth direction. For example, when the second elastic element 500 is a rubber ring surrounding the inner peripheral wall of the mounting groove 110, the second elastic element 500 moves downward as the locking element 300 is pressed down. The downward pressing direction of the locking element 300 is the groove depth direction of the mounting groove 110. The peripheral wall of the mounting groove 110 contracts squarely along the groove depth, so that the further the locking element 300 moves downward, the greater the friction between the second elastic element 500 and the locking element 300; conversely, the further the locking element 300 moves upward, the smaller the friction between the second elastic element 500 and the locking element 300. Therefore, when the lock 300 is pressed until it enters the unlocked state, there is a large friction between the second elastic element 500 and the lock 300 to hinder the movement of the lock 300. So initially, the first elastic element 400 needs to overcome the friction between the second elastic element 500 and the lock 300 to pop the lock 300 up. This process takes a certain amount of time. Therefore, after pressing down the second elastic element 500, the user has more time to rotate the second component 200 so that the second component 200 blocks the locking part 320 of the lock 300. Since the locking member 300 can only abut against the wall surface of the second component 200 facing the first component 100 after moving up a certain distance, the friction between the second elastic member 500 and the locking member 300 is small when the locking member 300 is abutted. The locking member 300 is mainly affected by the first elastic member 400. When the second locking hole rotates to directly above the locking part 320, the locking member 300 will still actively enter the locking state under the action of the first elastic member 400, thus completing the self-locking.

[0068] Reference Figure 5 and Figure 7 In some embodiments, the self-locking key of the rotating shaft further includes a limiting member 600, which is connected to the first protrusion 130. The limiting member 600 has a boss 610 protruding from the first protrusion 130, and the mounting part 310 has a second protrusion. In the locked state, the boss 610 abuts against the wall of the mounting groove 110, while the second protrusion is away from the wall of the mounting groove 110. The limiting member prevents the locking member 300 from being ejected by the first elastic member 400, and also allows the first elastic member 400 to continuously exert elastic force on the locking member 300, making the position of the locking member 300 more stable.

[0069] It is understood that in some embodiments, the limiting member 600 is a screw, the first protrusion 130 is threaded, and the limiting member 600 is threadedly connected to the first protrusion 130.

[0070] Reference Figures 1 to 7In some embodiments, along the direction of the first elastic member 400, the first elastic member 400 is connected to the second protrusion and the first component 100 respectively. The mounting portion 310 of the locking member 300 is tubular, and the second protrusion protrudes inward around the inner wall of the mounting portion 310. The first elastic member 400 is a spring, and the first elastic member 400 is sleeved on the first protrusion 130. The first elastic member 400 is connected to the second protrusion and the first component 100 respectively. With this arrangement, the elastic force provided by the first elastic member 400 is more stable, and the pressing feedback is more obvious.

[0071] Understandably, in some embodiments, the first elastic member 400 is first fitted onto the first protrusion 130, then the mounting portion 310 of the locking member 300 is mounted and abutted against the first elastic member 400. Next, the limiting member 600 is connected to the first protrusion 130, so that the boss 610 of the limiting member 600 abuts against the second protrusion of the mounting portion 310. Then, the second component 200 is rotatably connected to the mounting portion 310, realizing the rotatable connection between the second component 200 and the first component 100, and enabling the locking member 300 of the self-locking key to have both an unlocked and locked state. This modular design allows the locking member 300, the first component 100, the second component 200, and the first elastic member 400 to be processed separately, improving production efficiency, reducing assembly difficulty, and lowering manufacturing costs.

[0072] Understandably, in some embodiments, the lock 300 is made of aluminum, which has the advantages of being lightweight and easy to process, and has high strength and is not easily deformed during use.

[0073] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A self-locking key for a rotating shaft, used in an on-camera flash, characterized in that, include: The first component is provided with a mounting groove, and the mounting groove is provided with a first protrusion extending away from the depth direction; The second component has a first positioning hole, and the second component is rotatably connected to the first component; A locking component includes a mounting part and a locking part. The mounting part is movably mounted on the first protrusion, and the locking part is fixedly connected to the mounting part. The locking part can move along the depth direction of the mounting groove to an unlocked state that is disengaged from the first positioning hole, and move away from the depth direction of the mounting groove to a locked state that is inserted into the first positioning hole. A first elastic element, along the direction of the elastic force of the first elastic element, connects the lock and the first component. In the unlocked state, the first elastic element provides an elastic force to the lock away from the first component, so that the lock is in the locked state. In the unlocked state, the second component can rotate relative to the first component; in the locked state, the position of the second component relative to the first component is fixed. The self-locking key of the rotating shaft also includes a second elastic element, part of which is disposed on the inner wall surface of the mounting groove, and the other part of which is disposed to abut against the mounting part; The second elastic element provides elastic force to slow down the speed at which the lock changes from the unlocked state to the locked state; The peripheral wall of the mounting groove tapers along the depth of the groove; The self-locking key of the rotating shaft also includes a limiting member, which is connected to the first protrusion. The limiting member has a boss protruding from the first protrusion. The mounting part has a second protrusion. In the locked state, the boss faces the wall of the mounting groove and abuts against the wall of the second protrusion away from the mounting groove.

2. The self-locking key for a rotating shaft according to claim 1, characterized in that, The first component also has a clearance groove, in which the locking part is inserted into the clearance groove in the unlocked state.

3. The self-locking key for a rotating shaft according to claim 1, characterized in that, The second component also has a second positioning hole. In the locked state, the locking part is inserted into the first positioning hole or the locking part is inserted into the second positioning hole. In the unlocked state, the locking part is disengaged from the first positioning hole and the second positioning hole.

4. The self-locking key for a rotating shaft according to claim 3, characterized in that, The first positioning hole and the second positioning hole are connected.

5. The self-locking key for a rotating shaft according to claim 1, characterized in that, Along the elastic force direction of the first elastic element, the first elastic element is connected to the second protrusion and the first component respectively.

6. The self-locking key for a rotating shaft according to claim 5, characterized in that, The first elastic element is a spring.

7. The self-locking key for a rotating shaft according to claim 1, characterized in that, The second component also has a second positioning hole, and the self-locking key of the rotating shaft also includes a silicone cover, which covers the lock, the first positioning hole and the second positioning hole.

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